Swimming pool intrusion alarm



FIG. 1 is a perspective view of a swimming pool intrusion alarm showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a side elevational view thereof, the opposite side being a mirror image;

FIG. 5 is a rear elevational view thereof.

The undisclosed bottom is unornamented. 

The ornamental design for a swimming pool intrusion alarm, as shown and described. 